Datacenter current injection for power management

Abstract

Datacenter current injection for power management is disclosed. A controller for managing power control modules and current sensing for a datacenter power infrastructure unit is provided. At least three power control modules coupled to the controller are each connected to each phase of a three-phase datacenter power grid. Current sense inputs for each phase of the datacenter power grid are coupled to the controller. At least three battery modules are coupled to a corresponding power control module. The coupling provides an energy path between a battery module and phase of the three-phase datacenter power grid. The coupling is managed by the controller. Each power control module includes a battery charging unit and a current mode grid tie inverter unit. The current mode grid tie inverter unit enables current injection into each phase of the three-phase datacenter power grid at constant voltage and in-phase AC frequency for the phase.

What is claimed is: 
     
         1 . A datacenter power management apparatus comprising:
 a controller for managing power control modules (PCMs) and current sensing for a datacenter power infrastructure unit;   at least three power control modules, each coupled to the controller, wherein at least one of the at least three power control modules is connected to each phase of a three-phase datacenter power grid;   current sense inputs for each phase of the three-phase datacenter power grid, wherein the current sense inputs are each coupled to the controller; and   at least three battery modules, each coupled to a corresponding power control module, wherein the coupling provides an energy path between a battery module and each phase of the three-phase datacenter power grid, and wherein the coupling is managed by the controller.   
     
     
         2 . The apparatus of  claim 1  wherein each power control module comprises a battery charging unit and a current mode grid tie inverter unit. 
     
     
         3 . The apparatus of  claim 2  wherein the current mode grid tie inverter unit enables current injection into a phase of the three-phase datacenter power grid at a constant voltage for the phase. 
     
     
         4 . The apparatus of  claim 2  wherein the current mode grid tie inverter unit enables current injection into a phase of the three-phase datacenter power grid at an in-phase AC frequency for the phase. 
     
     
         5 . The apparatus of  claim 2  wherein the current mode grid tie inverter unit injects current using pulse width modulation control. 
     
     
         6 . The apparatus of  claim 5  wherein the pulse width modulation is used to condition energy from the battery modules. 
     
     
         7 . The apparatus of  claim 1  further comprising communication signal inputs coupled to the controller. 
     
     
         8 . The apparatus of  claim 7  wherein the communication signal inputs enable datacenter power policy execution. 
     
     
         9 . The apparatus of  claim 1  wherein the three-phase datacenter power grid is interrupted by the datacenter power management apparatus before it supplies energy to a datacenter load. 
     
     
         10 . The apparatus of  claim 9  wherein the current sense inputs are coupled to current sense devices contained within the datacenter power management apparatus. 
     
     
         11 . The apparatus of  claim 9  wherein the interruption comprises a series connection for the datacenter power management apparatus. 
     
     
         12 . The apparatus of  claim 1  wherein the three-phase datacenter power grid is coupled to a datacenter load uninterrupted by the datacenter power management apparatus. 
     
     
         13 . The apparatus of  claim 12  wherein the current sense inputs are coupled to current sense devices contained external to the datacenter power management apparatus. 
     
     
         14 . The apparatus of  claim 13  wherein the current sense devices comprise a junction box. 
     
     
         15 . The apparatus of  claim 14  wherein the junction box enables connection between an output of the datacenter power management apparatus and a phase of the three-phase datacenter power grid. 
     
     
         16 . The apparatus of  claim 12  wherein the coupling comprises a parallel connection for the datacenter power management apparatus. 
     
     
         17 . The apparatus of  claim 1  wherein the battery modules source energy for the power control modules. 
     
     
         18 . The apparatus of  claim 1  wherein the datacenter power management apparatus enables power bursting within the datacenter. 
     
     
         19 . The apparatus of  claim 1  wherein the controller manages operational modes for the datacenter power management apparatus. 
     
     
         20 . The apparatus of  claim 19  wherein the operational modes include charging and energy injection. 
     
     
         21 . The apparatus of  claim 19  wherein the operational modes are determined by a datacenter power management policy. 
     
     
         22 . The apparatus of  claim 21  wherein the datacenter power management policy enables power supply redundancy within the datacenter. 
     
     
         23 . The apparatus of  claim 1  wherein the datacenter power management apparatus is colocated with datacenter loads. 
     
     
         24 . The apparatus of  claim 23  wherein the colocation is within a datacenter rack. 
     
     
         25 . A computer program product embodied in a non-transitory computer readable medium for datacenter power management, the computer program product comprising code which causes one or more processors to perform operations of:
 providing control for at least three power control modules (PCMs) and for current sensing devices for a datacenter power infrastructure unit;   coupling to the controller at least three power control modules, wherein at least one of the at least three power control modules is connected to each phase of a three-phase datacenter power grid;   sensing current for each phase of the three-phase datacenter power grid, wherein the current sense inputs are each coupled to the controller; and   coupling at least three battery modules, wherein each battery module is coupled to a corresponding power control module, wherein the coupling provides an energy path between a battery module and each phase of the three-phase datacenter power grid, and wherein the coupling is managed by the controller.   
     
     
         26 . A processor-implemented method for datacenter power management comprising:
 providing a controller for a datacenter power infrastructure unit;   coupling the controller to at least three power control modules, wherein at least one of the at least three power control modules is connected to each phase of a three-phase datacenter power grid;   sensing current for each phase of the three-phase datacenter power grid, wherein at least three devices for sensing current are each coupled to the controller; and   coupling at least three battery modules, wherein each battery module is coupled to a corresponding power control module, wherein the coupling provides an energy path between a battery module and each phase of the three-phase datacenter power grid, and wherein the coupling is managed by the controller.